Diamesa, Meigen, 1835

Chamutiová, Tímea, Hamerlík, Ladislav & Bitušík, Peter, 2020, Subfossil chironomids (Diptera, Chironomidae) of lakes in the Tatra Mountains an illustrated guide, Zootaxa 4819 (2), pp. 216-264 : 221

Diamesa Tatra-type B ( Figs 12, 13 )

This is a new morphotype, not listed in Brooks et al. (2007).

Head capsule dark brown with lighter area around genal setae ( Figure 12 ). Mentum with a single median tooth and 9 pairs of lateral teeth. Median tooth and first pair of lateral teeth are prominent, other laterals are gradually decreasing. First inner tooth of mandible is more robust than second, but not longer than apical tooth ( Fig. 12 ). Setae submenti positioned below the base of mentum ( Fig. 13 ).

Figures

FIGURES 9–14. Diamesa bertrami-type: 9—head capsule, A—mandible. Diamesa Tatra-type A: 10—head capsule, A—mandible. Diamesa Tatra-type A: 11—mentum (arrow indicates position of seta submenti). Diamesa Tatra-type B: 12—head capsule (arrows indicate mandible and genal setae). Diamesa Tatra-type B: 13—mentum (arrow indicates position of seta submenti). Pseudodiamesa branickii-type: 14—head capsule (arrow indicates antenna).